/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/GroupTopology.h
FGroupTopologySelectionrepresents a set of selected elements of aFGroupTopology
struct FGroupTopologySelection
TSet< int32 >
SelectedCornerIDs
TSet< int32 >
SelectedEdgeIDs
TSet< int32 >
SelectedGroupIDs